Issue 11, 2009
From the journal:

Dalton Transactions

Di-, tetra- and polynuclear RhI complexes containing phenylene-1,4-diaminotetra(phosphonite), p-C6H4[N{P(OC6H4OMe-o)2}2]2 and their catalytic investigation towards transfer hydrogenation reactions†

Chelladurai Ganesamoorthy,a   Maravanji S. Balakrishna*a  and  Joel T. Magueb  

* Corresponding authors

a Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, India
E-mail: krishna@chem.iitb.ac.in
Fax: +91 22 2576 7152/2572 3480
Tel: +91 22 2576 7181

b Department of Chemistry, Tulane University, New Orleans, Lousiana, USA

Abstract

The reactions of phenylene-1,4-diaminotetra(phosphonite), p-C6H4[N{P(OC6H4OMe-o)2}2]2 (P2N(Ph)NP2) (1) with [Rh(COD)Cl]2 in 1 : 2 and 1 : 1 molar ratio produce tetra- and polymetallic chelate complexes, [Rh4(COD)2(μ-Cl)4(P2N(Ph)NP2)] (2) and [Rh2(μ-Cl)2(P2N(Ph)NP2)]n (3), respectively. Similar reaction of 1 with [Rh(COD)Cl]2 in dichloromethane–acetonitrile mixture furnishes a dinuclear complex, [Rh2Cl2(CH3CN)2(P2N(Ph)NP2)] (4). The reaction of 3 or 4 with CO affords a dinuclear carbonyl derivative, [Rh2Cl2(CO)2(P2N(Ph)NP2)] (5). Treatment of 4 with 2 equivalents of pyrazine or 4,4′-bipyridine produce one-dimensional RhI coordination polymers, [Rh2Cl2(C4H4N2)(P2N(Ph)NP2)]n (6) and [Rh2Cl2(C10H8N2)(P2N(Ph)NP2)]n (7) in quantitative yields. The catalytic activity of RhI complexes 2–7 have been investigated in transfer hydrogenation reactions.

Graphical abstract: Di-, tetra- and polynuclear RhI complexes containing phenylene-1,4-diaminotetra(phosphonite), p-C6H4[N{P(OC6H4OMe-o)2}2]2 and their catalytic investigation towards transfer hydrogenation reactions

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Article information

DOI
https://doi.org/10.1039/B815849E
Article type
Paper
Submitted
10 Sep 2008
Accepted
10 Dec 2008
First published
29 Jan 2009

Dalton Trans., 2009, 1984-1990

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Di-, tetra- and polynuclear RhI complexes containing phenylene-1,4-diaminotetra(phosphonite), p-C6H4[N{P(OC6H4OMe-o)2}2]2 and their catalytic investigation towards transfer hydrogenation reactions

C. Ganesamoorthy, M. S. Balakrishna and J. T. Mague, Dalton Trans., 2009, 1984 DOI: 10.1039/B815849E

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